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. Author manuscript; available in PMC: 2012 Mar 24.
Published in final edited form as: Vaccine. 2011 Feb 5;29(15):2761–2771. doi: 10.1016/j.vaccine.2011.01.093

Table 2.

Example of a foam drying cycle, in which the system pressure is decreased in a step-wise manner from atmospheric to 100mTorr, while maintaining the temperature above freezing.

Temperature Pressure Time
10°C atmospheric 15 min
10°C 5 Torr 20 min
22°C 1 Torr 2 hr
15°C 100 mTorr 45 hr